/* 清除默认样式 */
* {
    margin: 0;
    padding: 0;
}

ul,
ol,
li {
    list-style: none;
}

a {
    text-decoration: none;
}

/* 浮动以及清除浮动 */
.fl {
    float: left;
}

.fr {
    float: right;
}

.clearfix::after {
    content: '';
    height: 0;
    display: block;
    clear: both;
}

.clearfix {
    zoom: 1;
}

#wrap {
    width: 720px;
    height: 455px;
    border: 1px solid rgb(207, 205, 205);
    position: relative;
    margin: 20px auto;
    overflow: hidden;
}

/* 箭头样式 */
#wrap .arrow-l {
    position: absolute;
    top: 220px;
    left: 0px;
    border-bottom-right-radius: 50%;
    border-top-right-radius: 50%;
}

#wrap .arrow-r {
    position: absolute;
    top: 220px;
    right: 0px;
    border-bottom-left-radius: 50%;
    border-top-left-radius: 50%;
}

#wrap .arrow-l,
#wrap .arrow-r {
    width: 25px;
    height: 30px;
    background-color: rgba(170, 166, 166, .6);
    text-align: center;
    line-height: 30px;
    color: white;
    display: none;
    z-index: 2000;
}

/* 轮播图样式 */
#wrap ul {
    position: absolute;
    top: 0;
    left: 0;
    width: 500%;
}

#wrap ul li {
    float: left;
}

#wrap ul li img {
    width: 720px;
    height: 455px;
}

/* 小圆圈样式 */
#wrap ol {
    position: absolute;
    bottom: 20px;
    left: 50%;
    margin-left: -40px;
}

#wrap ol li {
    float: left;
    width: 10px;
    height: 10px;
    background-color: white;
    border-radius: 50%;
}

#wrap ol li:not(#wrap ol li:nth-last-of-type(1)) {
    margin-right: 10px;
}

#wrap ol .active {
    background-color: rgb(255, 102, 0);
}